[PATCH 23/42] dt-bindings: display: mediatek: Introduce Digital Video Output HW

[Rob Herring (Arm)]

On Wed, 01 Jul 2026 14:20:38 +0200, AngeloGioacchino Del Regno wrote:
> Add documentation for the Digital Video Output (DVO) IP found in
> the newer generation SoCs MT8196, MT8189 and their variants.
> 
> This is effectively a more capable block replacing the DisplayPort
> Interface (DPI/DP_INTF) one found in older SoCs.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>
> ---
>  .../display/mediatek/mediatek,mt8196-dvo.yaml | 142 ++++++++++++++++++
>  1 file changed, 142 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: ignoring, error in schema: properties: compatible
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.yaml: properties:compatible: [{'const': 'mediatek,mt8189-dp-dvo'}, {'const': 'mediatek,mt8189-edp-dvo'}, {'const': 'mediatek,mt8196-edp-dvo'}] is not of type 'object', 'boolean'
Traceback (most recent call last):
  File "/usr/local/bin/dt-doc-validate", line 8, in <module>
    sys.exit(main())
             ~~~~^^
  File "/usr/local/lib/python3.13/dist-packages/dtschema/doc_validate.py", line 66, in main
    ret |= check_doc(f)
           ~~~~~~~~~^^^
  File "/usr/local/lib/python3.13/dist-packages/dtschema/doc_validate.py", line 37, in check_doc
    dtsch.check_schema_refs()
    ~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/local/lib/python3.13/dist-packages/dtschema/schema.py", line 242, in check_schema_refs
    self._check_schema_refs(resolver, self)
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/dist-packages/dtschema/schema.py", line 212, in _check_schema_refs
    self._check_schema_refs(resolver, v, parent=k, is_common=is_common,
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                            has_constraint=has_constraint)
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/dist-packages/dtschema/schema.py", line 212, in _check_schema_refs
    self._check_schema_refs(resolver, v, parent=k, is_common=is_common,
    ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
                            has_constraint=has_constraint)
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/dist-packages/dtschema/schema.py", line 203, in _check_schema_refs
    ref_sch = resolver.lookup(schema['$ref']).contents
              ~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/dist-packages/referencing/_core.py", line 682, in lookup
    retrieved = self._registry.get_or_retrieve(uri)
  File "/usr/local/lib/python3.13/dist-packages/referencing/_core.py", line 422, in get_or_retrieve
    registry = self.crawl()
  File "/usr/local/lib/python3.13/dist-packages/referencing/_core.py", line 500, in crawl
    id = resource.id()
  File "/usr/local/lib/python3.13/dist-packages/referencing/_core.py", line 231, in id
    id = self._specification.id_of(self.contents)
  File "/usr/local/lib/python3.13/dist-packages/referencing/jsonschema.py", line 50, in _dollar_id
    return contents.get("$id")
           ^^^^^^^^^^^^
AttributeError: 'list' object has no attribute 'get'
Documentation/devicetree/bindings/display/mediatek/mediatek,mt8196-dvo.example.dtb: /example-0/dvo at 324c0000: failed to match any schema with compatible: ['mediatek,mt8196-edp-dvo']

doc reference errors (make refcheckdocs):

See https://patchwork.kernel.org/project/devicetree/patch/20260701122057.19648-24-angelogioacchino.delregno@collabora.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.